CN107354856B - Steel-concrete composite beam of groove-type upper flange plate - Google Patents

Steel-concrete composite beam of groove-type upper flange plate Download PDF

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Publication number
CN107354856B
CN107354856B CN201710624341.XA CN201710624341A CN107354856B CN 107354856 B CN107354856 B CN 107354856B CN 201710624341 A CN201710624341 A CN 201710624341A CN 107354856 B CN107354856 B CN 107354856B
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plate
flange
web
width
flange plate
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CN107354856A (en
Inventor
王春生
段兰
王茜
王雨竹
李熙同
崔志强
朱经纬
刘浩
王晓平
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Changan University
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Changan University
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00Bridges characterised by the cross-section of their bearing spanning structure
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00Material constitution of bridges
    • E01D2101/20Concrete, stone or stone-like material
    • E01D2101/24Concrete
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00Material constitution of bridges
    • E01D2101/30Metal

Abstract

The invention relates to a steel-concrete composite beam of a groove-type upper flange plate, which is characterized in that the upper flange plate is connected with a lower flange plate through a web plate, a stiffening rib is vertically arranged in the middle of the web plate and is vertical to the lower flange plate, a top plate is arranged at the top of the upper flange plate, the upper flange plate is of a trapezoidal, arc, rectangular and inverted triangular groove structure, the upper half part of the upper flange plate extends into the top plate, concrete which is connected with the top plate into a whole is poured in the trapezoidal, arc, rectangular or inverted triangular groove, and the upper flange plate is connected with the top plate through a shear-resistant connecting piece.

Description

Steel-concrete composite beam of groove-type upper flange plate
Technical Field
The invention belongs to the technical field of steel-concrete composite structure bridges, and particularly relates to a steel-concrete composite beam of a groove-type upper flange plate.
Background
In recent years, the steel-concrete composite structure is developed quickly in China, and engineering application practices prove that the composite structure fully utilizes the advantages of a steel structure and a concrete structure, can obtain excellent structural performance by using a traditional construction method and a simple construction process, has the advantages of light weight, large span, prefabricated assembly, quick construction and the like, can meet the requirement of a modern structure on functions, has remarkable technical and economic benefits and social benefits, is suitable for the national situation of modern foundation construction, and becomes one of important development directions of a structural system.
The metal foaming steel material has light weight, high rigidity, durability, high specific surface area and special sound absorption, shock absorption and fire resistance, and the foaming metal can be regarded as a composite material of metal and air. The closed-cell foam material has closed cells inside, has an energy absorption effect similar to a honeycomb structure, and has excellent heat insulation and fireproof capabilities.
In the bridge field, the application of the traditional I-shaped composite beam is wider, but the following problems are found in the summary of practical engineering experience: after the concrete top plate and the I-shaped steel girder are combined through the shear connectors, a sliding effect easily occurs under the action of load, and local stress is easily uneven and the stability of the bridge is damaged due to the fact that the height-thickness ratio of the I-shaped steel girder is too large, so that the stability of the steel girder is guaranteed by more temporary supports before the traditional I-shaped composite girder is combined with the concrete top plate at the construction stage, and the construction difficulty is increased.
Disclosure of Invention
In order to overcome the defects of the existing steel-concrete composite beam, the invention provides the steel-concrete composite beam of the groove-shaped upper flange plate, which can ensure the integral working performance of a steel main beam and a concrete top plate, improve the rigidity of the top plate and ensure the stress of a web plate to be balanced.
The technical scheme adopted by the invention for realizing the purpose is as follows: pass through the web at last flange board and be connected with the flange board of turning down, be provided with stiffening rib perpendicularly in the middle part of web, stiffening rib is perpendicular with the flange board of turning down, be provided with the roof at the top of last flange board, it is trapezoidal, the arc, the rectangle, the triangle-shaped groove structure of falling, the first half of last flange board extends to in the roof and in trapezoidal, the arc, the rectangle or pour into a mould have with the roof concrete as an organic whole that is connected, be connected through shear connector between last flange board and the roof.
The upper flange plate can also be of a hollow structure, the hollow pipe is filled with foaming steel, and the ratio of the thickness of the bottom of the upper flange plate to the thickness of the foaming steel is 1: 2 to 4.
Above-mentioned upper limb listrium is trapezoidal groove structure, and it is by the bottom plate, oblique web and upper fringe board are constituteed, and the left and right both ends of bottom plate are connected with oblique web respectively, form the trapezium structure, are provided with the last reason board parallel with the bottom plate on the top of oblique web, and the contained angle between oblique web in left side and the bottom plate is 120 ~ 135, and oblique web in right side and left side are about bottom plate central line symmetry, and the width of bottom plate is 1 with the ratio of oblique web length: 1.5-2, the ratio of the width of the upper edge plate to the width of the bottom plate is 1: 2-10, the height of the upper edge plate extending into the top plate is 1/3-1/2 of the total height of the upper flange plate.
The upper flange plate is of an arc groove structure and is composed of an upper flange plate and an arc panel, the upper flange plate is arranged at the top ends of the left side wall and the right side wall of the arc panel respectively and is parallel to the lower flange plate, the central angle of the arc panel is 150-210 degrees, the diameter of the arc panel is equal to the width of the lower flange plate, and the upper flange plate extends into the top plate and is 1/3-1/2 of the total height of the upper flange plate.
The upper flange plate is of a rectangular groove structure and is composed of a bottom plate, a straight web plate and an upper edge plate, the left end and the right end of the bottom plate are respectively connected with the straight web plate to form a rectangular structure, the top end of the straight web plate is provided with the upper edge plate parallel to the bottom plate, the right side straight web plate and the left side straight web plate are symmetrical about the center line of the bottom plate, and the width of the bottom plate and the length of the straight web plate are in a ratio of 1: 0.5-1, the ratio of the width of the upper edge plate to the width of the bottom plate is 1: 2-10, the height of the upper edge plate extending into the top plate is 1/3-1/2 of the total height of the upper flange plate.
Above-mentioned upper limb listrium is inverted triangle-shaped groove structure, it comprises last flange and the oblique web of upper limb, the left and right both ends of web upside are connected with oblique web respectively, form the inverted triangle structure, be provided with on oblique web's top with the parallel last flange of lower limb listrium, the contained angle between oblique web of left side and the web is 120 ~ 150, oblique web of right side and the oblique web of left side are about web central line symmetry, the width of lower limb listrium and the ratio of oblique web length are 1: 0.8 to 1.5, the ratio of the width of the upper flange plate to the width of the lower flange plate is 1: 2-10, the height of the upper edge plate extending into the top plate is 1/3-1/2 of the total height of the upper flange plate.
The shear connectors are equally spaced or symmetrically distributed on the upper flange plate.
The steel-concrete composite beam of the groove-shaped upper flange plate provided by the invention has the advantages that the upper flange plate of the bridge is processed into the structures of the trapezoid groove, the arc-shaped groove, the rectangular groove, the inverted-triangle groove or the trapezoid pipe-shaped groove filled with the foamed steel, the arc-shaped pipe-shaped groove filled with the foamed steel, the rectangular pipe-shaped groove filled with the foamed steel and the inverted-triangle pipe-shaped groove filled with the foamed steel, the foamed steel is filled in the pipe-shaped upper flange, the foamed steel and the upper flange plate form an integral structure to bear force, concrete is poured in the groove to form an integral structure with the top plate, the upper flange plate and the top plate are connected and fixed through the shear-resistant connecting piece, the integral working performance of the upper flange plate and the concrete top plate is ensured, the flat upper flange plate of the traditional I-shaped composite beam is replaced by the groove-shaped upper flange plate, the easy sliding effect of the flat upper flange plate and the concrete top plate of the traditional I-shaped composite beam is avoided, the integral working performance of the steel girder and the concrete top plate is improved, the rigidity of the concrete top plate is improved by the upper flange plate extending into the top plate, the foamed steel is filled in the tubular upper flange, and the rigidity of the upper flange plate is improved.
Drawings
Fig. 1 is a schematic structural view of embodiment 1.
Fig. 2 is a schematic structural view of the upper flange plate 2 in fig. 1.
Fig. 3 is a schematic structural view of embodiment 4.
Fig. 4 is a schematic structural view of the upper flange plate 2 in fig. 3.
FIG. 5 is a schematic structural view of example 5.
Fig. 6 is a schematic view of the structure of the upper flange plate 2 in fig. 5.
FIG. 7 is a schematic structural view of example 8.
Fig. 8 is a schematic view of the structure of the upper flange plate 2 in fig. 7.
Fig. 9 is a schematic structural view of embodiment 9.
Fig. 10 is a schematic view of the structure of the upper flange plate 2 in fig. 9.
FIG. 11 is a schematic structural view of example 12.
Fig. 12 is a schematic view of the structure of the upper flange plate 2 in fig. 11.
FIG. 13 is a schematic structural view of example 13.
Fig. 14 is a schematic view of the structure of the upper flange plate 2 in fig. 13.
FIG. 15 is a schematic structural view of example 16.
Fig. 16 is a schematic view of the structure of the upper flange plate 2 in fig. 15.
Detailed Description
The technical solution of the present invention is further explained with reference to the drawings and the embodiments, but the present invention is not limited to the following implementation cases.
Example 1
Referring to fig. 1, the steel-concrete composite girder of the upper flange plate of the channel type of the present embodiment is composed of a top plate 1, an upper flange plate 2, a stiffener 3, a web 4, a lower flange plate 5, and a shear connector 6.
The lower flange plate 5 and the web plate 4 of this embodiment are connected in a T-shape, that is, the lower end of the web plate 4 is welded to the lower flange plate 5, the middle of the web plate 4 is welded with a stiffening rib 3, the stiffening rib 3 is respectively perpendicular to the lower flange plate 5 and the web plate 4, the end of the web plate 4 opposite to the lower flange plate 5 is welded to an upper flange plate 2, the upper flange plate 2 of this embodiment is in a trapezoidal groove structure, referring to fig. 2, and is composed of a bottom plate 2-1, an oblique web plate 2-2 and an upper edge plate 2-3, the bottom plate is parallel to the lower flange plate 5, and is welded to the upper end of the web plate 4, the length is 4300mm, the width is 150mm, and the thickness is 12mm, the oblique web plates 2-2 are respectively welded to the left and right ends of the bottom plate, the oblique web plate 2-2 of this embodiment is divided into a left oblique web plate and a right oblique web plate, that is, in order to guarantee holistic structural rigidity, the inclination angle of oblique web in a left side is 130, and the contained angle between oblique web in a left side and the bottom plate is 130, and the length of oblique web in a left side is 270mm, and is 1.8 with the width ratio of bottom plate: and 1, the right inclined web plate and the left inclined web plate have the same specification and structure and are symmetrical about the central line of the bottom plate. An upper edge plate 2-3 is welded on the top of the left inclined web plate and the top of the right inclined web plate respectively, the length of the upper edge plate 2-3 is 4300mm, the width of the upper edge plate is 30mm, and the thickness of the upper edge plate is 8mm, namely the ratio of the width of the upper edge plate 2-3 to the width of the bottom plate is 1: 5. the top plate 1 is arranged on the top of the upper flange plate 2 of the present embodiment, in order to enhance the structural rigidity of the top plate 1, the upper end of the upper flange plate 2 extends into the top plate 1, the top plate 1 of the present embodiment is made of concrete material, in order to connect the upper flange plate 2 and the top plate 1 into an integrated structure and enhance the stability of the upper flange plate 2, the concrete material is poured into the trapezoidal groove formed by the inclined web 2-2 of the upper flange plate 2 and the bottom plate and is connected with the top plate 1 into an integrated structure, the inclined web 2-2 and the upper flange 2-3 of the upper flange plate 2 extend into the top plate 1, and the height of the upper flange plate 2-3 extending into the top plate 1 is 2/5 of the total height of the upper flange plate 2. In order to enhance the connection strength between the upper flange plate 2 and the top plate 1, four sets of shear connectors 6 are mounted on the inner surface of the upper flange plate 2, that is, the shear connectors 6 in this embodiment are fastening bolts, two sets of shear connectors are symmetrically arranged at the center of the vertical height of the inclined web 2-2 and are oriented perpendicular to the inclined web 2-2, and the other two sets of shear connectors are arranged at the middle two quarters of the width direction of the bottom plate and are oriented perpendicular to the bottom plate. And a group of fastening bolts are symmetrically arranged on the partial outer surfaces of the upper flange plate 2 extending into the top plate 1, namely the partial outer surfaces of the left inclined web plate and the right inclined web plate extending into the top plate 1, and the directions of the fastening bolts are respectively vertical to the left inclined web plate and the right inclined web plate.
Example 2
The inclined angle of the left inclined web plate of the inclined web plate 2-2 in the embodiment is 120 degrees, namely the included angle between the left inclined web plate and the bottom plate is 120 degrees, the length of the left inclined web plate is 225mm, and the ratio of the length of the left inclined web plate to the width of the bottom plate is 1.5: and 1, the right inclined web plate and the left inclined web plate have the same specification and structure and are symmetrical about the central line of the bottom plate. The length of the upper edge plate 2-3 of the present embodiment is 4300mm, the width is 20mm, and the thickness is 8mm, that is, the ratio of the width of the upper edge plate 2-3 to the width of the bottom plate is 1: 7.5, the height that the upper edge panel 2-3 extends into the top panel 1 is 1/2 the total height of the upper edge panel 2.
Other components and the connection relationship of the components are the same as those in embodiment 1.
Example 3
The inclined angle of the left inclined web plate of the inclined web plate 2-2 in the embodiment is 135 degrees, namely the included angle between the left inclined web plate and the bottom plate is 135 degrees, the length of the left inclined web plate is 300mm, and the ratio of the width of the left inclined web plate to the width of the bottom plate is 2: and 1, the right inclined web plate and the left inclined web plate have the same specification and structure and are symmetrical about the central line of the bottom plate. The length of the upper edge plate 2-3 of the embodiment is 4300mm, the width is 15mm, and the thickness is 8mm, that is, the ratio of the width of the upper edge plate 2-3 to the width of the bottom plate is 1: 10, the height that the upper edge panel 2-3 extends into the top panel 1 is 1/3 the total height of the upper flange panel 2.
Other components and the connection relationship of the components are the same as those in embodiment 1.
Example 4
Referring to fig. 3, the steel-concrete composite girder of the upper flange plate of the channel type of the present embodiment is composed of a roof plate 1, an upper flange plate 2, a stiffener 3, a web 4, a lower flange plate 5, a shear connector 6, and foamed steel 7.
The upper flange plate 2 of the present embodiment is formed by filling foamed steel into a hollow tube having a hollow trapezoidal tubular groove structure, and is composed of a bottom plate 2-1, an inclined web 2-2, an upper flange plate 2-3, and foamed steel 7, as shown in fig. 4. The bottom plate 2-1 is parallel to the lower flange plate 5 and welded at the upper end of the web plate 4, the length of the outer wall of the bottom plate is 4300mm, the width of the bottom plate is 150mm, the thickness of the bottom plate is 12mm, the length of the inner wall of the bottom plate is 4300mm, the width of the inner wall of the bottom plate is 96mm, and the thickness of the inner wall of the bottom plate is 12. The left end and the right end of the bottom plate 2-1 are respectively connected with an inclined web plate 2-2 in a welding mode, the inclined web plate 2-2 of the embodiment is divided into a left inclined web plate and a right inclined web plate, and the right inclined web plate and the left inclined web plate are identical in specification and structure and are symmetrical about the center line of the bottom plate. An upper edge plate 2-3 is welded on the top of the left inclined web plate and the top of the right inclined web plate respectively, the length of the upper edge plate 2-3 is 4300mm, the width is 75mm, and the thickness is 8mm, namely the ratio of the width of the upper edge plate 2-3 to the width of the bottom plate is 1: 2. the thickness of the filled foam steel 7 in the upper flange plate 2 of the embodiment is 36mm, that is, the ratio of the thickness of the foam steel 7 to the thickness of the bottom plate 2-1 is 1: 3.
other Components and connection relationships of the Components are the same as in embodiment 1, 2 or 3
Example 5
Referring to fig. 5 and 6, the upper flange plate 2 of the present embodiment is an arc groove structure, which is composed of arc panels 2-4 and upper flange plates 2-3, the bottom of the arc panels 2-4 is welded on the upper end of the web plate 4, the central angle of the arc panels is 180 °, the diameter of the arc panels is equal to the width of the lower flange plate 5, the top ends of the left and right sides of the arc panels 2-4 extend into the top plate 1 and are respectively welded with the upper flange plates 2-3, the upper flange plates 2-3 are parallel to the lower flange plate 5, and the height of the arc panels extending to the top plate 1 is 1/2 of the total height of the upper flange plate 2. 4 groups of shear connectors 6 are arranged on the inner surface of the arc-shaped panel 2-4, the arc length of the arc-shaped panel 2-4 is divided into five equal parts at equal intervals, the five equal parts are respectively arranged at four equal points in the middle and are symmetrically distributed, the shear connectors 6 of the embodiment are fastening bolts, the direction of the fastening bolts is vertical to the tangent line of the arc at the equal points, a group of shear connectors 6 are also arranged on the outer surface of the part extending into the top plate 1 at the left side and the right side of the arc-shaped panel 2-4, the direction of the shear connectors is vertical to the tangent line of the arc at the point, and the shear connectors are arranged at 1/2 of the arc length of the arc section extending into the.
Other components and the connection relationship of the components are the same as those in embodiment 1.
Example 6
The upper flange plate 2 of this embodiment is an arc groove structure, and it is that arc panel 2-4 and upper flange plate 2-3 constitute, and the bottom welding of arc panel 2-4 is in the upper end of web 4, and its central angle is 150, and the diameter equals with the width of lower flange plate 5, and the top of the left and right sides of this arc panel 2-4 extends to in roof 1 and has welded upper flange plate 2-3 respectively, and upper flange plate 2-3 is parallel with lower flange plate 5, and its height that extends to roof 1 is 1/3 of upper flange plate 2 total height.
Other components and the connection relationship of the components are the same as those in embodiment 5.
Example 7
The upper flange plate 2 of this embodiment is an arc groove structure, and it is that arc panel 2-4 and upper flange plate 2-3 constitute, and the bottom welding of arc panel 2-4 is in the upper end of web 4, and its central angle is 210, and the diameter equals with the width of lower flange plate 5, and the top of the left and right sides of this arc panel 2-4 extends to in roof 1 and has welded upper flange plate 2-3 respectively, and upper flange plate 2-3 is parallel with lower flange plate 5, and its height that extends to roof 1 is 2/5 of upper flange plate 2 total height.
Other components and the connection relationship of the components are the same as those in embodiment 5.
Example 8
Referring to fig. 7 and 8, the upper flange plate 2 of the present embodiment is a hollow arc-shaped tubular groove structure, the hollow tube is filled with the foaming steel 7, which is composed of the arc-shaped panel 2-4, the upper flange plate 2-3 and the foaming steel 7, the bottom of the arc-shaped panel 2-4 is welded to the upper end of the web plate 4, the central angle thereof is 180 °, the diameter thereof is equal to the width of the lower flange plate 5, the top ends of the left and right sides of the arc-shaped panel extend into the top plate 1 and are respectively welded with the upper flange plates 2-3, the upper flange plates 2-3 are parallel to the lower flange plate 5, and the height of the upper flange plate 2 extending to the top plate 1 is 1/2 of the total height of the upper flange. The hollow cavity of the arc-shaped panel 2-4 is filled with foaming steel 7, and the thickness ratio of the foaming steel 7 to the arc-shaped panel 2-4 is 3: 1. 4 groups of shear connectors 6 are arranged on the inner wall of the arc-shaped panel 2-4, the arc length of the arc-shaped panel 2-4 is divided into five equal parts at equal intervals, the five equal parts are respectively arranged at four equal points in the middle and are symmetrically distributed, the shear connectors 6 of the embodiment are fastening bolts, the direction of the fastening bolts is vertical to the tangent line of the arc at the equal points, a group of shear connectors 6 are also arranged on the outer surface of the part of the left side and the right side of the outer wall of the arc-shaped panel 2-4 extending into the top plate 1, the direction of the shear connectors is vertical to the tangent line of the arc at the point, and the shear connectors are arranged at 1/2 of the arc length of the arc section of.
Other components and the connection relationship of the components are the same as those in embodiment 5 or 6 or 7.
Example 9
Referring to fig. 9 and 10, the upper flange plate 2 of the present embodiment is a rectangular groove structure, which is composed of a bottom plate 2-1, an upper flange plate 2-3 and a straight web plate 2-5, the bottom plate 2-1 is parallel to the lower flange plate 5, and is welded to the upper end of the web plate 4, the length of the bottom plate is 4300mm, the width of the bottom plate is 200mm, the thickness of the bottom plate is 12mm, the straight web plates 2-5 are welded to the left and right ends of the bottom plate, respectively, the straight web plate 2-5 of the present embodiment is divided into a left straight web plate and a right straight web plate, i.e., the left straight web plate is welded to the left end of the bottom plate, the right straight web plate is welded to the right end of the bottom plate, the length of: 2. the right straight web plate and the left straight web plate have the same specification and structure and are symmetrical about the central line of the bottom plate. An upper edge plate 2-3 is welded on the top of the left straight web plate and the top of the right straight web plate respectively, the length of the upper edge plate 2-3 is 4300mm, the width is 20mm, and the thickness is 8mm, namely the ratio of the width of the upper edge plate 2-3 to the width of the bottom plate is 1: 10. the top plate 1 is arranged on the top of the upper flange plate 2 of the present embodiment, in order to enhance the structural rigidity of the top plate 1, the upper end of the upper flange plate 2 extends into the top plate 1, the top plate 1 of the present embodiment is made of concrete material, in order to connect the upper flange plate 2 and the top plate 1 into an integrated structure and enhance the stability of the upper flange plate 2, the concrete material is poured into the rectangular groove formed by the straight web 2-5 of the upper flange plate 2 and the bottom plate and is connected with the top plate 1 into an integrated structure, the straight web 2-5 and the upper flange plate 2-3 of the upper flange plate 2 extend into the top plate 1, and the height of the upper flange plate 2-3 extending into the top plate 1 is 2/5 of the total height of the upper flange plate 2. The top plate 1 is arranged on the top of the upper flange plate 2 of the present embodiment, and four sets of shear connectors 6 are mounted on the inner surface of the upper flange plate 2 in order to enhance the structural rigidity of the top plate 1 and the connection strength between the upper flange plate 2 and the top plate 1, that is, the shear connectors 6 of the present embodiment are fastening bolts, two sets of which are symmetrically arranged at the center of the vertical height of the straight web plate 2-5 and are oriented perpendicular to the straight web plate 2-5, and the other two sets of which are arranged at the middle two quarter points in the width direction of the bottom plate and are oriented perpendicular to the bottom plate. And a group of fastening bolts are symmetrically arranged on the partial outer surfaces of the upper flange plate 2 extending into the top plate 1, namely the partial outer surfaces of the left straight web plate and the right straight web plate extending into the top plate 1, and the directions of the fastening bolts are respectively vertical to the left straight web plate and the right straight web plate.
Other components and the connection relationship of the components are the same as those in embodiment 1.
Example 10
The length of the left straight web 2-5 of the present embodiment is 180mm, and the ratio of the length to the width of the bottom plate is 1: and 1, the right straight web plate and the left straight web plate have the same specification and structure and are symmetrical about the central line of the bottom plate. The length of the upper edge plate 2-3 of the present embodiment is 4300mm, the width is 36mm, and the thickness is 8mm, that is, the ratio of the width of the upper edge plate 2-3 to the width of the bottom plate is 1: 5, the height that the upper edge panel 2-3 extends into the top panel 1 is 1/2 the total height of the upper flange panel 2.
Other components and the connection relationship of the components are the same as those in embodiment 9.
Example 11
The length of the left straight web 2-5 of the present embodiment is 200mm, and the ratio of the length to the width of the bottom plate is 0.8: and 1, the right straight web plate and the left straight web plate have the same specification and structure and are symmetrical about the central line of the bottom plate. The length of the upper edge plate 2-3 of the present embodiment is 4300mm, the width is 33mm, and the thickness is 8mm, that is, the ratio of the width of the upper edge plate 2-3 to the width of the bottom plate is 1: 7.5, the height that the upper edge panel 2-3 extends into the top panel 1 is 1/3 the total height of the upper edge panel 2.
Other components and the connection relationship of the components are the same as those in embodiment 9.
Example 12
Referring to fig. 11 and 12, the upper flange plate 2 of this embodiment is a hollow rectangular tubular structure, and the hollow tube is filled with foamed steel 7, which is composed of a bottom plate 2-1, an upper flange plate 2-3, a straight web plate 2-5 and foamed steel 7, the outer wall of the bottom plate 2-1 is parallel to the lower flange plate 5, and is welded to the upper end of the web plate 4, and has a length of 4300mm, a width of 200mm, a thickness of 12mm, a length of 4300mm, a width of 104mm, and a thickness of 12mm, the straight web plates 2-5 are welded to the left and right ends of the bottom plate 2-1, respectively, the straight web plate 2-5 of this embodiment is divided into a left straight web plate and a right straight web plate, the length of the left straight web plate is 100mm, and the ratio of the left straight web plate to the width of the bottom plate is 1: and 2, the right straight web plate and the left straight web plate have the same specification and structure and are symmetrical about the central line of the bottom plate. The left end and the right end of the bottom plate 2-1 are respectively welded with a straight web plate 2-5, the length of the inner wall of the straight web plate 2-5 at the left side is 52mm, and the ratio of the width of the inner wall of the bottom plate 2-1 to the width of the inner wall of the bottom plate 2-1 is 1: 2, the right side straight web 2-5 and the left side straight web 2-5 have the same specification and structure and are symmetrical about the central line of the bottom plate. The top parts of the left and right straight web plates 2-5 are respectively welded with an upper edge plate 2-3, the length of the upper edge plate 2-3 is 4300mm, the width is 80mm, and the thickness is 8mm, namely the ratio of the width of the upper edge plate 2-3 to the width of the outer wall of the bottom plate 2-1 is 1: 2.5. the hollow cavity of the upper flange plate 2 is filled with foamed steel 7, the ratio of the thickness of the foamed steel 7 to the thickness of the bottom plate 2-1 is 4:1, namely the thickness of the foamed steel 7 is 48 mm.
Other components and the connection relationship of the components are the same as those in embodiment 9 or 10 or 11.
Example 13
Referring to fig. 13 and 14, the upper flange plate 2 of the present embodiment is an inverted triangular groove structure, which is composed of an upper flange oblique web 2-6 and an upper flange plate 2-3, the bottom of the upper flange oblique web 2-6 is welded to the upper end of the web 4, the upper flange oblique web 2-6 of the present embodiment is divided into an upper flange left oblique web and an upper flange right oblique web, that is, the upper flange left oblique web is welded to the left side of the upper end of the web, the upper flange right oblique web is welded to the right side of the upper end of the web, in order to ensure the overall structural rigidity, the inclination angle of the upper flange left oblique web is 120 °, that is, the included angle between the upper flange left oblique web and the bottom plate is 120 °, the length of the upper flange left oblique web is 200mm, and the ratio of the length of the upper flange left oblique web to the: 1, the thickness is 12mm, and the right oblique web plate of upper flange is the same with the left oblique web plate of upper flange specification, structure to about the central line symmetry of web 4. An upper flange plate 2-3 is welded at the top of the left oblique web plate of the upper flange and the top of the right oblique web plate of the upper flange respectively, the length of the upper flange plate 2-3 in the embodiment is 4300mm, the width of the upper flange plate is 50mm, and the thickness of the upper flange plate is 8mm, namely the ratio of the width of the upper flange plate 2-3 to the width of the lower flange plate is 1: 5. the top plate 1 is arranged on the top of the upper flange plate 2 of the present embodiment, in order to enhance the structural rigidity of the top plate 1, the upper end of the upper flange plate 2 extends into the top plate 1, the top plate 1 of the present embodiment is made of concrete material, in order to connect the upper flange plate 2 and the top plate 1 into an integrated structure and enhance the stability of the upper flange plate 2, the concrete material is poured into the inverted triangular groove formed by the left and right oblique webs of the upper flange plate 2 and is connected with the top plate 1 into an integrated structure, the oblique web plate 2-6 of the oblique web plate of the upper flange plate 2 and the upper flange plate 2-3 extend into the top plate 1, and the height of the upper flange plate 2-3 extending into the top plate 1 is 2/5 of the total height of the upper flange plate 2. In order to enhance the connection strength between the upper flange plate 2 and the top plate 1, four sets of shear connectors 6 are mounted on the inner surface of the upper flange plate 2, that is, the shear connectors 6 in this embodiment are fastening bolts, wherein the four sets are symmetrically arranged at two thirds of the upper flange oblique web 2-6 and are oriented perpendicular to the upper flange oblique web 2-6. And a group of fastening bolts are symmetrically arranged on the partial outer surfaces of the upper flange plate 2 extending into the top plate 1, namely the partial outer surfaces of the left inclined web plate and the right inclined web plate extending into the top plate 1, and the directions of the fastening bolts are respectively vertical to the left inclined web plate and the right inclined web plate of the upper flange.
Other components and the connection relationship of the components are the same as those in embodiment 1.
Example 14
The inclined angle of the upper flange left oblique web plate of the upper flange oblique web plate 2-6 of the embodiment is 135 degrees, namely the included angle between the upper flange left oblique web plate and the web plate 4 is 135 degrees, the length of the upper flange left oblique web plate is 180mm, and the ratio of the width of the upper flange left oblique web plate to the width of the lower flange plate 5 is 1.2: and 1, the right oblique web plate of the upper flange and the left oblique web plate of the upper flange have the same specification and structure and are symmetrical about the central line of the bottom plate. The length of the upper edge plate 2-3 of the present embodiment is 4300mm, the width is 20mm, and the thickness is 8mm, that is, the ratio of the width of the upper edge plate 2-3 to the width of the bottom plate is 1: 7.5, the height that the upper edge panel 2-3 extends into the top panel 1 is 1/2 the total height of the upper edge panel 2.
Other components and the connection relationship of the components are the same as those in embodiment 13.
Example 15
The inclined angle of the upper flange inclined web 2-6 in this embodiment is 150 °, that is, the included angle between the upper flange left inclined web and the web 4 is 150 °, the length of the upper flange left inclined web is 225mm, and the ratio of the width of the upper flange left inclined web to the width of the lower flange plate 5 is 1.5: and 1, the right oblique web plate of the upper flange and the left oblique web plate of the upper flange have the same specification and structure and are symmetrical about the central line of the bottom plate. The length of the upper edge plate 2-3 of the embodiment is 4300mm, the width is 15mm, and the thickness is 8mm, that is, the ratio of the width of the upper edge plate 2-3 to the width of the bottom plate is 1: 10, the height that the upper edge panel 2-3 extends into the top panel 1 is 1/3 the total height of the upper flange panel 2.
The other components and the connection relationship of the components are the same as those in embodiment 13.
Example 16
Referring to fig. 15 and 16, the upper flange plate 2 of the present embodiment is a hollow inverted triangular tube structure, and the hollow tube is filled with foamed steel 7, which is composed of an upper flange oblique web 2-6, an upper flange plate 2-3 and foamed steel 7, the bottom of the upper flange oblique web 2-6 is welded to the upper end of the web 4, the inclination angle of the upper flange left oblique web is 120 °, that is, the included angle between the upper flange left oblique web and the web is 120 °, the outer wall length of the upper flange left oblique web is 200mm, and the ratio of the upper flange left oblique web to the width of the lower flange plate 5 is 0.8: 1, the thickness is 12mm, the upper flange) oblique web plate 2-6 has the inner wall length of 120mm and the thickness of 12mm, and the upper flange right oblique web plate and the upper flange left oblique web plate have the same specification and structure and are symmetrical about the central line of the web plate 4. An upper flange plate 2-3 is welded on the top of the left oblique web plate and the top of the right oblique web plate of the upper flange respectively, the length of the upper flange plate 2-3 in the embodiment is 4300mm, the width of the upper flange plate is 100mm, and the thickness of the upper flange plate is 8mm, namely the ratio of the width of the upper flange plate 2-3 to the width of the lower flange plate is 1: 2.5. the hollow pipe of the upper flange plate 2 with the inverted triangular tubular structure is filled with foamed steel 7, and the thickness ratio of the foamed steel 7 to the upper flange inclined web plate 2-6 is 3: 1, i.e. the thickness of the foamed steel is 36 mm.
Other components and the connection relationship of the components are the same as those in embodiment 13 or 14 or 15.
Example 17
The shear connectors 6 of the above embodiments 1-16 may be replaced by stiffening plates or anchor rods.
Other components and the connection relationship of the components are the same as those of the corresponding embodiments.
The present invention is not limited to the above-mentioned embodiment, and the shear connectors 6 may be replaced by other common fasteners, and the specific number, distribution position, etc. of the shear connectors may be adjusted according to the actual use situation.

Claims (2)

1. The utility model provides a steel-concrete composite beam of flange board on cell-type, passes through web (4) to be connected at last flange board (2) and lower flange board (5), is provided with stiffening rib (3) perpendicularly at the middle part of web (4), and stiffening rib (3) are perpendicular with lower flange board (5), are provided with roof (1), its characterized in that at the top of last flange board (2): the upper flange plate (2) is of a trapezoidal, arc, rectangular and inverted triangular groove structure; the upper half part of the upper flange plate (2) extends into the top plate (1), concrete which is connected with the top plate (1) into a whole is poured in a trapezoidal, arc, rectangular or inverted triangular groove, and the upper flange plate (2) is connected with the top plate (1) through a shear connector (6); go up flange board (2) are hollow structure, are filled with foaming steel (7) in last flange board (2), and the ratio of the thickness of going up flange board (2) bottom plate thickness and foaming steel (7) is 1: 2 to 4.
2. The steel-concrete composite beam of a channel-type upper flange plate according to claim 1, wherein: the height of the upper flange plate (2) extending into the top plate (1) is 1/3-1/2 of the total height of the upper flange plate (2).
CN201710624341.XA 2017-07-27 2017-07-27 Steel-concrete composite beam of groove-type upper flange plate Active CN107354856B (en)

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KR102051320B1 (en) * 2018-12-26 2019-12-03 화성산업주식회사 I beam Concrete Composite Girder
CN109797661B (en) * 2019-03-25 2020-08-11 东南大学 Fabricated FRP reinforcement seawater sea sand concrete-UHPC superposed beam bridge structure and construction method
CN110042740B (en) * 2019-05-06 2020-01-07 胡锋 Concrete box girder shear connection key arrangement method based on corrugated steel web
CN112095446A (en) * 2020-09-16 2020-12-18 贵州路桥集团有限公司 Y-shaped steel component of steel-concrete composite beam

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DE4227056A1 (en) * 1992-08-12 1994-02-17 Werner Dr Ing Bartel Composite steel and concrete beam - uses flanged holes in steel beam members to give good keying between steel and concrete
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JP2001027005A (en) * 1999-07-14 2001-01-30 Nippon Steel Corp Connection structure of steel member and concrete in a composite structure
CN100343460C (en) * 2005-11-22 2007-10-17 南京工业大学 Novel steel-concrete combined beam
CN104074129B (en) * 2014-06-05 2016-06-08 邢台路桥建设总公司 A kind of pin-connected panel box girder with corrugated steel webs and manufacture method thereof
CN105350440A (en) * 2015-12-04 2016-02-24 郑州大学 Y-shaped steel member of steel and concrete composite girder
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